1. Aim - To explain the fluid mosaic model
Do Now: Describe what is meant by a mosaic.

3. Articles http://biology.about.com/od/cellanatomy/ss/cell-membrane.htm

4. Cell membrane
Selective Permeability- the membrane is “selective” it allows some substances in but keeps others out.

5. Let me introduce you to .. A phospholipid
Loves water
(Hydrophilic)
Phosphate group
Hates water
(Hydrophobic)
Fatty acid chains

6. Task-1
1. Work out how a load of phospholipids would arrange themselves in a wet environment.

7. Task-2
1. Work out how a load of phospholipids would arrange themselves in a wet environment.
2. Add some cholesterol within the membrane

8. Task-2
1. Work out how a load of phospholipids would arrange themselves in a wet environment.
2. Add some cholesterol within the membrane

9. Task-3
3. Add some proteins on either side and through

10. Task-3
3. Add some proteins on either side and through

11. Task-4
Add some sugars to some of the proteins and some sugars to some of the fats

12. Task-4
Add some sugars to some of the proteins and some sugars to some of the fats
Glycolipid
Glycoprotein
Outside
inside

13. Cell Membranes The Fluid Mosaic Model
Lesson-1
Task-4
Add some sugars to some of the proteins and some sugars to some of the fats
Glycolipid
Glycoprotein

14. Could it look like a mosaic?
Cell Membranes The Fluid Mosaic Model
Lesson-1
Question
Could it look like a mosaic?
Glycolipid
Glycoprotein

15. Cell membranes

16. Activity Read Along- Reading Essentials
Build a cell membrane with play-doh- demonstrate the fluid mosaic model
Make sure you include the phospholipid bilayer and the substances that can be found floating in the membrane.

17. Regents Question A function of cell membranes in humans is the
(1) synthesis of the amino acids
(2) production of energy
(3) replication of genetic material
(4) recognition of certain chemicals

18. Homework
Explain the structure of the cell membrane and the fluid mosaic model in a fully developed paragraph.

19. Homework The fluid mosaic model Molecules rarely change sides
The term fluid refers to the fact that molecules move very freely within each layer.
Glycolipid
Glycoprotein
Molecules rarely change sides